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// Test unit for AES-128 ECB and CTR mode
// Odzhan

#include <stdio.h>
#include <string.h>
#include <stdint.h>

#include "aes.h"

#if AES_KEY_LEN == 32
#error "Only AES-128 is supported by this test unit. Set AES_KEY_LEN in aes.h to 16."
#endif

// 4 128-bit keys
uint8_t ecb_keys[4][16]={
  {0x2b, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6, 0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf, 0x4f, 0x3c},
  {0x2b, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6, 0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf, 0x4f, 0x3c},
  {0x2b, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6, 0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf, 0x4f, 0x3c},
  {0x2b, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6, 0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf, 0x4f, 0x3c}
};

// 4 128-bit plain texts
uint8_t ecb_plain[4][16]={
  {0x6b, 0xc1, 0xbe, 0xe2, 0x2e, 0x40, 0x9f, 0x96, 0xe9, 0x3d, 0x7e, 0x11, 0x73, 0x93, 0x17, 0x2a},
  {0xae, 0x2d, 0x8a, 0x57, 0x1e, 0x03, 0xac, 0x9c, 0x9e, 0xb7, 0x6f, 0xac, 0x45, 0xaf, 0x8e, 0x51},
  {0x30, 0xc8, 0x1c, 0x46, 0xa3, 0x5c, 0xe4, 0x11, 0xe5, 0xfb, 0xc1, 0x19, 0x1a, 0x0a, 0x52, 0xef},
  {0xf6, 0x9f, 0x24, 0x45, 0xdf, 0x4f, 0x9b, 0x17, 0xad, 0x2b, 0x41, 0x7b, 0xe6, 0x6c, 0x37, 0x10}
};

// 4 128-bit cipher texts
uint8_t ecb_cipher[4][16]={
  {0x3a, 0xd7, 0x7b, 0xb4, 0x0d, 0x7a, 0x36, 0x60, 0xa8, 0x9e, 0xca, 0xf3, 0x24, 0x66, 0xef, 0x97},
  {0xf5, 0xd3, 0xd5, 0x85, 0x03, 0xb9, 0x69, 0x9d, 0xe7, 0x85, 0x89, 0x5a, 0x96, 0xfd, 0xba, 0xaf},
  {0x43, 0xb1, 0xcd, 0x7f, 0x59, 0x8e, 0xce, 0x23, 0x88, 0x1b, 0x00, 0xe3, 0xed, 0x03, 0x06, 0x88},
  {0x7b, 0x0c, 0x78, 0x5e, 0x27, 0xe8, 0xad, 0x3f, 0x82, 0x23, 0x20, 0x71, 0x04, 0x72, 0x5d, 0xd4}
};

uint8_t ctr_key[16]={0x2b,0x7e,0x15,0x16,0x28,0xae,0xd2,0xa6,0xab,0xf7,0x15,0x88,0x09,0xcf,0x4f,0x3c};
uint8_t ctr_tv[16]={0xf0,0xf1,0xf2,0xf3,0xf4,0xf5,0xf6,0xf7,0xf8,0xf9,0xfa,0xfb,0xfc,0xfd,0xfe,0xff};

uint8_t ctr_plain[4][16]={
  {0x6b,0xc1,0xbe,0xe2,0x2e,0x40,0x9f,0x96,0xe9,0x3d,0x7e,0x11,0x73,0x93,0x17,0x2a},
  {0xae,0x2d,0x8a,0x57,0x1e,0x03,0xac,0x9c,0x9e,0xb7,0x6f,0xac,0x45,0xaf,0x8e,0x51},
  {0x30,0xc8,0x1c,0x46,0xa3,0x5c,0xe4,0x11,0xe5,0xfb,0xc1,0x19,0x1a,0x0a,0x52,0xef},
  {0xf6,0x9f,0x24,0x45,0xdf,0x4f,0x9b,0x17,0xad,0x2b,0x41,0x7b,0xe6,0x6c,0x37,0x10}};

uint8_t ctr_cipher[4][16]={
  {0x87,0x4d,0x61,0x91,0xb6,0x20,0xe3,0x26,0x1b,0xef,0x68,0x64,0x99,0x0d,0xb6,0xce},
  {0x98,0x06,0xf6,0x6b,0x79,0x70,0xfd,0xff,0x86,0x17,0x18,0x7b,0xb9,0xff,0xfd,0xff},
  {0x5a,0xe4,0xdf,0x3e,0xdb,0xd5,0xd3,0x5e,0x5b,0x4f,0x09,0x02,0x0d,0xb0,0x3e,0xab},
  {0x1e,0x03,0x1d,0xda,0x2f,0xbe,0x03,0xd1,0x79,0x21,0x70,0xa0,0xf3,0x00,0x9c,0xee}};

void bin2hex(char *s, void *p, int len) {
    int i;
    printf("%-10s : ", s);
    for (i=0; i<len; i++) {
      printf ("%02x ", ((uint8_t*)p)[i]);
    }
    printf("\n");
}

int main (void) {
    int     i, equ;
    uint8_t data[16], key[AES_KEY_LEN];
    
    puts ("\n**** AES-128 ECB Test ****\n");
    
    // ecb tests
    for (i=0; i<4; i++) {
      memcpy(data, ecb_plain[i], 16);
      memcpy(key, ecb_keys[i], AES_KEY_LEN);
      
      #ifdef ASM
        uint8_t s[32];
        memcpy(s, data, 16);
        memcpy(&s[16], key, 16);
        
        aes_ecb_asm(s);
        memcpy(data, s, 16);
      #else
        aes_ecb(key, data);
      #endif
      equ = (memcmp(data, ecb_cipher[i], 16) == 0);
      
      bin2hex("key", key, 16);
      bin2hex("cipher", data, 16);
      
      printf("AES-128 ECB Test #%i : %s\n\n", 
        (i+1), equ ? "OK" : "FAILED");
    }
    
    #ifdef CTR
      puts ("\n**** AES-128 CTR Test ****\n");
      // ctr tests
      bin2hex("key", ctr_key, 16);
        
      for(i=0; i<4; i++) {
        bin2hex("ctr", ctr_tv, 16);
        bin2hex("plain", ctr_plain[i], 16);
        
        memcpy(data, ctr_plain[i], 16);
        
        aes_ctr(16, ctr_tv, data, ctr_key);
        equ = (memcmp(data, ctr_cipher[i], 16) == 0);
        
        bin2hex("cipher", data, 16);
        
        printf("AES-128 CTR Test #%i : %s\n\n", 
          (i+1), equ ? "OK" : "FAILED");
      }
    #endif
    return 0;
}
